St. Louis, MO (KSDK) - The chief advocacy officer at Mercy has stepped down after a 17-year-old was caught using a laser pointer at Busch Stadium while in the company's suite.

NewsChannel 5 has obtained an internal company statement by Lynn Britton, President and CEO of Mercy Health. It indicates that Marie Glancy tendered her resignation Thursday.

Glancy issued the following apology with her resignation:

I deeply regret the incident at the Cardinals game and my involvement in it. Much of my work in recent years has been to help tell Mercy's story and to influence our ability to be a viable ministry in the community. That I would have been involved in shedding a negative light on Mercy is contrary to all I've worked for. I have chosen to leave my position with Mercy. It is my desire that Mercy - and I - have the opportunity to move forward and recover any damage from the incident.

During Monday night's Cardinals-Giants game, Matt Holiday was at the plate when he noticed a green laser dot on the pitcher's mound and, backing out of the batter's box, called timeout.